Weird lumps in vaginal opening 2 days after sex and vulval itching - Help!!

Ive attached a picture so you can see what it looks like. The sex was unprotected. I know, stupid. And ive had just really uncomfortable itching in my whole vagina, and my vagina walls are quite sensitive and tender to the touch now. if someone could help it would be great.

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did you have any dizziness or headache after sex? tingly feet or tingly anything?